<template>
    <div class="app-container">
        <!-- 顶部Header区域 -->
        <mt-header fixed title="Vue项目">
					<!-- 添加返回按钮 -->
			<span  slot="left" @click="goback" v-show="flag">
				<mt-button icon="back">返回</mt-button>
			</span>
		</mt-header>

        <!-- 中间的路由route-view区域 -->
		<transition>
			<router-view></router-view>
		</transition>
        <!-- 底部的Tabbar区域 -->
		<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-byj " to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label"  >首页</span>
			</router-link>
			<router-link class="mui-tab-item-byj" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-byj" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{$store.getters.getAllCount}} </span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-byj" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
    </div>
</template>
<script>
// 使用Mui-ui的js组件toast
import {Toast} from "mint-ui";
export default{
    data () {
		return {
			flag:false,
		}
	},
	created () {
		// 监听进入页面是不是首页
		this.flag = this.$route.path == '/home' ? false : true; 
	},
	methods: {
		// 实现返回按钮可以点击返回
		goback(){
			this.$router.go(-1);
		}
	},
	// 监听当地址为/home时 隐藏返回键
	watch: {
		'$route.path':function(newVal){
			if(newVal == '/home'){
				this.flag = false;
			}else{
				this.flag = true;
			}
		}
	}
}
</script>
<style scoped lang="less">
.mint-header{
	z-index: 99;
}
.app-container{
	padding-top:40px;
	padding-bottom: 50px;
	overflow-x: hidden; // 解决上下导航栏的移动问题
}
.v-enter{
	opacity: 0;
	// translate的移动默认相对于自己的左上角移动
	transform: translateX(100%); //进入时候向左移动
}
.v-leave-to{
	opacity: 0;
	transform: translateX(-100%); // 离开时也要向左移动
	position: absolute;
}
.v-enter-active,
.v-leave-active{
	transition: all 0.5s ease
}
.mui-bar-tab .mui-tab-item-byj.mui-active {
    color: #007aff;
}
.mui-bar-tab .mui-tab-item-byj {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-byj .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-byj .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>

